EP1027166A1 - Distributeur pour plusieurs milieux melanges avant decharge - Google Patents

Distributeur pour plusieurs milieux melanges avant decharge

Info

Publication number
EP1027166A1
EP1027166A1 EP98965137A EP98965137A EP1027166A1 EP 1027166 A1 EP1027166 A1 EP 1027166A1 EP 98965137 A EP98965137 A EP 98965137A EP 98965137 A EP98965137 A EP 98965137A EP 1027166 A1 EP1027166 A1 EP 1027166A1
Authority
EP
European Patent Office
Prior art keywords
chamber
piston
closure
dispenser according
medium
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP98965137A
Other languages
German (de)
English (en)
Other versions
EP1027166B1 (fr
Inventor
Stefan Ritsche
Peter Stadelhofer
Hans Merk
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Aptar Radolfzell GmbH
Original Assignee
Erich Pfeiffer GmbH
Ing Erich Pfeiffer GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Erich Pfeiffer GmbH, Ing Erich Pfeiffer GmbH filed Critical Erich Pfeiffer GmbH
Publication of EP1027166A1 publication Critical patent/EP1027166A1/fr
Application granted granted Critical
Publication of EP1027166B1 publication Critical patent/EP1027166B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/0005—Components or details
    • B05B11/0078—Arrangements for separately storing several components
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
    • B05B11/02—Membranes or pistons acting on the contents inside the container, e.g. follower pistons
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/24—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas with means, e.g. a container, for supplying liquid or other fluent material to a discharge device
    • B05B7/2402—Apparatus to be carried on or by a person, e.g. by hand; Apparatus comprising containers fixed to the discharge device
    • B05B7/2405—Apparatus to be carried on or by a person, e.g. by hand; Apparatus comprising containers fixed to the discharge device using an atomising fluid as carrying fluid for feeding, e.g. by suction or pressure, a carried liquid from the container to the nozzle

Definitions

  • the invention relates to a dispenser for media, in particular flowable or pourable media, which can be liquid, mushy, powdery, or the like. If a second or third medium is used or carried out in addition to a first medium, the states of matter mentioned apply to each of these media, which can also be mixed out as desired.
  • the dispenser is expedient to be carried freely with one hand and at the same time to be operated with the holding hand by finger pressure so that each of the media in the dispenser and out of the dispenser is conveyed under this pressure force.
  • the medium can be sucked from a media store, such as a bottle, into a pressure or pump chamber evacuated by increasing the volume and then pressurized by reducing this chamber and thereby discharged from the media outlet.
  • a pump sucks medium from the reservoir during a stroke movement, for example during the return stroke, and releases it in the opposite direction of stroke, whereby one stroke, for example the return stroke, can be driven by a spring.
  • the medium can also be stored in the pressure chamber before the dispenser is used for the first time, so that in order to completely empty this pressure accumulator, a stroke movement of the discharge actuation is only required in a single direction, namely to reduce the pressure chamber, and a suction return stroke is not provided.
  • the invention has for its object to provide a dispenser in which disadvantages of known training or the type described are avoided and in particular an improved inclusion of the stored medium, prior to delivery into the open a prior shifting of
  • the medium is to be transferred from a first pressure chamber into a second pressure chamber under pressure or gradient, without the medium being discharged from the media outlet or the outlet channel being flowed through.
  • the medium can be stored very well against contamination or contamination in the first chamber before starting or priming the dispenser and can be transferred to the second chamber only at the start of the preliminary stroke serving for the discharge.
  • a medium can also be stored in the second chamber, which is then mixed with the medium from the first chamber and discharged as a mixture.
  • the dispenser is therefore suitable in a single actuation or working stroke for the preceding homogeneous mixing of two media components and for the subsequent discharge of this mixture.
  • the components can react chemically with one another, can be converted into a solution with one another or can be stored in different physical states.
  • one of the media can only be, for example, a compressible or liquid conveying medium which, in contrast to another medium in the storage state, contains no active substance and may be so volatile that it separates from this other medium after discharge.
  • Each of the media mentioned can be stored in each of the chambers mentioned.
  • the two chambers are expediently designed such that an enlargement of one chamber can inevitably and simultaneously lead to a reduction in the size of the other chamber or vice versa.
  • a chamber boundary separating the two chambers and moving in the sense of this reduction and enlargement for example a flexible partition, such as a film, a slide, such as a displacer or a piston or the like
  • this chamber boundary could bypass the first into the second chamber, it is expedient to pass through this chamber boundary and / or between two adjacent chamber boundaries after a closure that seals the two chambers against one another has been opened mechanically or depending on pressure or stroke.
  • a closure can be an automatically closing valve or a closure member that does not return to its closed position after opening, such as a closure body to be pushed out of a sealing seat, a membrane or the like to be pierced.
  • the separating body between the two chambers can expediently be moved up to the completion of the decanting only as a function of the gradient of the pressure forces which act in opposite directions on the dividing wall in the two chambers.
  • one of the chambers in particular the first chamber, can be changed in volume, for example with a chamber boundary that can be moved relative to the partition as described with reference to this partition.
  • the partition and this chamber boundary approach each other in opposite directions, for example until the first chamber is emptied or the chamber boundary strikes the partition.
  • the chamber delimitation takes the partition in the stroke direction, whereby the second chamber after its possible enlargement is reduced again and through an then only openable outlet closure or the media outlet from Dispenser is emptied away.
  • the partition closure is opened by moving the partition or the opposite chamber boundary, which can take the partition in parallel so that the distance between the partition and the chamber boundary remains the same. If the first chamber is completely filled with a non-compressible medium, for example a liquid, the entrainment of the partition wall in the stroke direction until the partition closure is opened is mediated solely by this medium. However, it can also be a separate, after the discharge on
  • Dispenser remaining driving member can be provided, the driving connection is released after disengagement of the closure by disengaging coupling members.
  • a slide valve or an opening member which slidably penetrates the chamber boundary, the first chamber or the partition wall and which is guided in a sealed manner in the chamber boundary is also conceivable for opening the separating closure. In this case, the partition does not need to be moved to open the partition.
  • the second chamber can expediently be changed in volume, in particular reduced in size, against spring force.
  • a gas filling such as sterilized air, can be provided in the second chamber for this purpose.
  • This compressible medium can then be used as a conveying medium to discharge the de or the other media in the
  • the second chamber thus serves as a mixing or premixing chamber, which can be followed by a further mixing or flow calming chamber.
  • This chamber expediently adjoins the outlet closure downstream and can, like the second chamber or the opened closure, be designed in such a way that it has an at least two-fold flow reversal in opposite directions or an annular or toroidal roller flow of the medium effected before this is supplied to the media outlet through a substantially narrowed section of the outlet channel.
  • Both or all of the chambers can be delimited on the circumference by a common, pre-assembled unit, for example a rigid or inherently rigid body, such as a tube.
  • This body is open at both ends through a cross section that is at least as large as the clear cross section of the narrowest of the chambers.
  • the filling of the first and / or the second chamber can also belong to this preassembled unit separate from the media outlet, so that after the respective medium has been filled in and before assembly on the other parts of the dispenser, sterilization, for example cold sterilization with gamma rays, is possible.
  • the tubular body or the like can be made in one piece from glass, but also from plastic and can have constant internal and / or external cross sections over its entire length.
  • All media or mixing chambers can be mutually dependent on volume changes. Furthermore, it is expedient if means are provided which allow a minimum dwell time of the medium in the second or third chamber after the dispenser has been actuated, in particular after decanting. During this time, the means block the discharge paths of the medium against its discharge pressure and / or the manual actuation required to generate the discharge pressure. In the manner of a step control with a time delay for the subsequent functional step, such as a refilling or discharge step, this results in a reaction time of, for example, more than five or eight seconds. During this time, the media immediately mixed with one another can react with one another until a stable state is reached, be it to dissolve, mix or disperse the media. Instead of using an automatically working and lock after the expiry of The lock can also be released manually, for example by a rotary movement about the central axis of the dispenser, regardless of the time element releasing the manual actuation.
  • FIG. 1 shows a dispenser according to the invention in a partially sectioned view and starting position
  • FIG. 2 shows a detail of the dispenser according to FIG. 1 in a modified design
  • Fig. 3 shows the section of FIG. 2 in a first
  • FIGS. 2 and 3 shows the detail according to FIGS. 2 and 3 in a second working position and in a modified configuration
  • FIG. 6 shows a cross section through the dispenser according to FIG.
  • FIGS. 1 and 7 shows another dispenser in accordance with FIGS. 1 and 7,
  • FIG. 10 shows a further dispenser corresponding to FIG. 1,
  • FIG. 12 shows another dispenser corresponding to FIG. 1.
  • the dispenser 1 has two one-part or multi-part units 2, 3, which together can also comprise one-part components. They are to be moved towards each other to shorten the dispenser 1 in order to carry out the actuation or discharge stroke.
  • the entire unit 2 is formed by a one-piece base body 4.
  • the second unit 3 also has a one-piece base body 5, which is considerably longer than the body 4 and at least partially accommodates it inside.
  • the body 4 forms an actuating pressure surface or handle 6 with its exposed end surface.
  • a corresponding pressure surface or handle 7 of the body 5 projects laterally with individual surfaces on both sides, is offset in the direction of flow with respect to the handle 6, and points away from the handle 6 and approaches handle 6 during the working stroke.
  • the unit 3 has the media outlet 8 or an atomizing nozzle on the base body 5.
  • the nozzle channel extends to the edge of the nozzle 8 and is limited in one piece by the body 5 up to this force.
  • a tubular, one-piece chamber body 9 is provided. It protrudes freely against the flow direction into the body 4, which in turn protrudes freely in the flow direction and is permanently contact-free with respect to the body 9.
  • All components 2 to 9 of the dispenser 1 are arranged in a common axis 10 which is parallel to the flow and actuation or stroke direction.
  • two axially adjoining chambers 11 to 13 which are sealed against one another in the starting position are provided.
  • the chambers are completely delimited by boundaries 14 to 20.
  • the circumference of the storage chamber 11 is delimited by a jacket 14. It is formed separately from the body 9 as a flexible bellows, which is shortened axially so that its internal volume is close to zero.
  • the chamber 11 is delimited and sealed by movable closure parts 16, 17, such as pistons, slides or the like.
  • the jacket 14 does not touch the body 9, so that between it and the body 9 an annular space is formed.
  • the jacket 14 can have annularly closed bellows sections or bellows constrictions and bellows protrusions designed in a helical or steeply helical shape around its axis 10.
  • the chamber 13 is closed by two closure parts 18, 19, namely the insert 18 and a sleeve-shaped stopper 19. It lies downstream of the insert 18 and is inserted into the body 9 against the direction of flow or formed by the body 5.
  • the chamber 13 is smaller than each of the chambers 11, 12.
  • An overflow opening is provided between the chambers 11, 12. It is tightly closed in the starting position with a valve or closure 20, here a thin membrane, to which both chambers 11, 12 directly adjoin.
  • the overflow opening passes through the piston 17 in the center and is narrower than the sliding surfaces of the piston 17 or the diameter of the chambers 11 to 13.
  • the closure 20 can be spaced between the ends of the overflow opening or in the plane of one end.
  • a needle-shaped opening member 21 is provided for opening the closure 20 by piercing or piercing. It protrudes from the insert 18 against the direction of flow and is formed in one piece with it.
  • Ka mei '12 is ring-shaped.
  • the one-piece piston 17 has two oppositely directed and flared piston lips 22, 23. They proceed as jacket walls from a common piston crown 24 lying between them.
  • the upstream and protruding piston lip 22 seals the annular space around the
  • Jacket 14 and receives the associated end portion of this jacket 14 inside.
  • the jacket 14 extends to the associated end face of the piston head 24. It stands radially inwards over the lips 22, 23 and is formed in one piece with the jacket 14 or the closure 20.
  • the lip 23 projecting freely in the direction of flow likewise seals off the chamber 12 with the body 9 and, in the starting position, receives the free end of the link 21 inside.
  • the piston 16 slides in a sealed manner on the inner circumference of the body 9, extends to the upstream end of the jacket 14 and can likewise be formed in one piece with it or, like the piston 17, as a preassembled unit.
  • the unit 14, 16, 17 with the filled chamber 11 can be inserted into the body 9 as a prefabricated and possibly pre-sterilized cartridge in or against the direction of flow.
  • the piston 16 can be penetrated by channels.
  • Corresponding channels could also radially penetrate the jacket of the body 9 upstream immediately adjacent to the lip 22.
  • the chamber 12 Downstream, the chamber 12 is delimited by an outlet closure 25, such as a pressure-dependent opening and resiliently closing valve.
  • Its movable valve body can be designed or aligned as described with the aid of the lip 23.
  • the valve body 25 lies in a ring on the inner circumference of the other valve body, namely the body 9, and delimits the upstream end of the chamber 13 at this point.
  • the radially resiliently constrictable valve body is formed in one piece with the members 18, 21.
  • the insert 18 touches the body 9 only in the area of the single valve seat.
  • a core body 26 Downstream of the insert 18 or its piston head, which is similar to the piston head 24, there is an extension, for example a core body 26, into the plug 19 and approximately up to the nozzle channel of the Outlet 8 before.
  • the body 26 extends as far as the piston head into the valve body of the insert 18. It is formed in one piece with this valve body or the members 18, 21. In cross section, the body 26 is significantly wider than the nozzle channel.
  • the stro downward end or the end face of the body 26 delimits a chamber or device 28 for producing a swirling or swirling flow of the medium around the nozzle axis 10 with the opposite end face of the plug bore through which the nozzle channel passes. This flows from the axial channels 27 Medium directly into this chamber 28 radially and then again axially directly into the nozzle channel.
  • valve body of the valve 25 delimits, with the foot of the body 26, an annular space narrowed in the direction of flow.
  • a corresponding annular space constricted in the direction of flow delimits the conical end of the plug 19 with the inner circumference of the body 9.
  • the two annular spaces lying opposite one another with an axial spacing form the two ends of the chamber 13 the medium flows in the radially inner region counter to the direction of flow and then only enters the plug 19 or the channel 27 only with the opposite deflection.
  • the outlet 8 is provided at the free end of a slender connecting piece 29 tapering in the direction of flow. It protrudes elongated in the direction of flow over the handle 7. About the outer circumference of the projection 29, the handle 7 is diametrically opposed to only two overlying pages. In this way, the connecting piece 29 can be taken between two fingers resting on the handles 7.
  • a first lock 30 is provided to secure the discharge actuation in the starting position and a second lock 31 to secure it after a first part of the stroke.
  • the connecting piece 29 has an outermost jacket 32 which extends from the outlet 8 against the direction of flow to the handle 7. connects in one piece to the plug 19 and surrounds the body 9 over most of its length with a radial distance.
  • a transverse plate 33 projects radially outward from the upstream end of the jacket 32. It forms the handle 7. On the outer circumference, the plate 33 merges into a jacket wall 34 directed against the flow direction. It has 7 smaller heights in the area of the handle and greater heights in the areas opposite each other. The body 4 can thus be pushed almost completely into this cap 33, 34. With a radial distance inside the jacket 34, another jacket wall 35 adjoins the inside of the wall 33. It extends counter to the direction of flow into the plane of the end edge of the higher section of the jacket 34 and connects tangentially to the inner sides of these higher sections.
  • the jacket 34 is elongated or flat oval parallel to the handles 7 in an axial view.
  • the jacket 35 and another jacket 36 are axially symmetrical or cylindrical.
  • the jacket 36 lies within the jacket 35 at a radial-to-radial distance, also projects freely against the flow direction over the inside of the wall 33 and can be aligned with the jacket 32.
  • the body 5 forms all the walls 32 to 36.
  • the jacket 36 projects less far than the jackets 34, 35.
  • the body 4 has a locking member which projects radially over its outer circumference, for example a snap member 37 or snap members distributed over the circumference at a distance.
  • a locking member 37 formed by the body 4 can spring radially inwards and the counter member 38 radially outwards.
  • a correspondingly high axial force exerted on the handles 6, 7 releases the locking member 37 and thus the unit 2 in a jerky manner. Thereafter, the forces opposing the actuation remain significantly lower over the entire stroke.
  • the lock 31 becomes effective by a stop, and the end of this partial route can thereby be recognized or felt.
  • the lock 31 has a further stop and locking member 39 at a distance upstream from the link 37 on the unit 2. It can connect to the outer circumference of the body 4 at a distance from the ends and, in the starting position, lies inside the jacket 34 or 35 at its upstream end.
  • the inner circumference of the annular or disk-shaped member 39 connects in one piece to the body 4 via a disengageable member, for example a weakened predetermined breaking zone 40.
  • the upstream end face of the jacket 36 forms the counter stop 41 for the link 39.
  • the unit 2 has a freely projecting in the flow direction follower or thrust element for the piston 16, for example a sleeve-shaped tappet 42.
  • a sleeve-shaped tappet 42 In the initial position is the downstream "opposite end of the plunger 42 with a small axial spacing from the associated counter surface or from the upstream end of the piston 16 within the body 9, with respect to which the plunger 42 remains permanently contact-free, the plunger 42 being surrounded at a radial distance by a longer shield, such as a closed sleeve 43. It protrudes freely above the plunger 42 in the flow direction and, like this, is from the body 4. Its upstream end is formed by an end wall 44. The outside of which forms the handle 6. From the Wall 44, the two sleeves 42, 43 are free.
  • the sleeve 43 projects through the jacket 36 into the jacket 32.
  • the sleeve 43 surrounds the upstream end of the body 9 as well as the piston 16 and part of the chamber 11.
  • FIGS. 2 to 5 also show the consecutive operating states or lifting steps of the dispenser during discharge in accordance with the sequence of figures.
  • the body 9 is formed by two separate tubes 14, 15 of different lengths which are inserted into one another.
  • Each has constant external and internal cross sections throughout its length.
  • the shorter, inner tube 14 adjoins with its outer circumference close to the inner circumference of the tube 15 and is rigidly connected to it, for example by gluing, welding, a press fit or the like.
  • the upstream ends of the tubes 14, 15 lie at the same level.
  • the outer tube 15 projects in the direction of flow arrow 56 over the tube 14.
  • Both tubes 14, 15 consist of different materials or the same material, for example
  • the tube 14 only delimits the narrower chamber 11 and the tube 15 only the chambers 12, 13. While according to FIG. 1 the piston lips 22, 23 have the same diameter, according to FIGS. 2 to 5 they have different diameters.
  • the lip 22 has a smaller diameter than the lip 23.
  • the piston area on which the pressure in the chamber 11 acts is smaller than the piston area on which the pressure in the chamber 12 acts.
  • a differential piston 17 is thus formed. 2 the lip 22 slides permanently on the narrower inner circumference of the tube 14 and the lip 23 permanently on the enlarged inner circumference of the tube 15.
  • the piston crown of the piston 17 forms a stop. In all of the above positions, it lies at an axial distance of a counter-stop, namely the downstream end of the tube 14.
  • thermal expansions in the chamber 12 allow the piston 17 to be displaced in the direction of the flow.
  • an excess pressure which arises in the chamber 12 in the idle state remains limited.
  • the valve 25 is not opened by appropriate adjustment of the closing force.
  • Chambers is practically brought to zero.
  • the link 21 and a further link are provided, namely a mandrel 45 protruding freely in the direction 56. It can be formed in one piece with the link 45 and, like this, optionally with the piston 16.
  • it is formed by a component separate from the piston 16 and, under the actuating pressure acting on the piston 16, increases its radial sealing pressure relative to the inner circumference of the chamber 11 or the tube 14 by means of piston expansion.
  • the medium is pressed out with a link 47 from the axial channels of link 21. It is complementary to the link 21 and formed by the free end of the dome 45.
  • the links 21, 47 are, however, designed in such a way that transition or longitudinal channels 57 distributed over their circumference remain open between them, as shown in FIG. 6, each of which is delimited by both links 21, 47. Upstream, these channels 47 connect to longitudinal channels 48. They lie on the outer circumference of the bodies 45, 46 and are open to the chamber 11 until the end of the actuation stroke.
  • the upstream end of the insert 18 is complementary or frustoconical.
  • the upstream end of the plug 19 could also be designed to be complementary to the annular opening of the insert 18 surrounded by the valve body of the valve 25.
  • the insert 18 would then be displaced in the flow direction during the last partial stroke of the actuation stroke in order to press the medium out of the chamber 13.
  • the body 26 ends at the upstream end of the plug 19.
  • the body 26 is penetrated by one or two intersecting channels or grooves.
  • the medium flows radially into it from the chamber 13 and is further mixed again at the crossing point, after which it axially enters the outlet channel 27. This lies in the axis 10 and not eccentrically to it as in FIG. 1, since it is limited solely by the bore in the plug 19.
  • the largest inside diameter of the chambers is less than 15 mm, 10 mm or 7 mm.
  • the two sections 14, 15 of the body 9 are formed in one piece with one another.
  • the inner circumference of section 15 merges into the narrower inner circumference of section 14.
  • the outer circumference remains constant over the entire length of the sections 14, 15. This results in a greater wall thickness of the body 9 in the region of the section 14.
  • the body 9 is in turn formed by two individual bodies, namely two tubes 14, 15.
  • the tube 14 protrudes in the opposite direction 56 via the tube 15.
  • the outer circumference of the body 9 in the region of the projecting part of the tube 14 is narrower than in the region of the tube 15 or is the same size if the tube 14 has different outer diameters and with its annular shoulder at the upstream end of the tube 15 strikes.
  • the body 9 according to FIG. 5 corresponds to that according to FIG.
  • the reference numerals 49 to 55 and the associated arrows represent not only the individual working positions or actuation or stroke paths, but also their direction. Paths 49 to 53 and 55 are directed in the direction of 56, whereas path 54 is opposite.
  • the plunger 42 is first moved over the stroke 49 until it strikes the piston 16 and then takes it along with the subsequent stroke 50.
  • the medium completely filling the chamber 11 acts as a rod-shaped or ring-shaped solid.
  • the piston 17 is also carried along via the stroke 50. During this stroke 50, the stationary lancing tip 21 penetrates into the closure 20 and the bore of the piston 17.
  • the closure 20 is opened and the chamber 11 is connected to the chamber 12 solely by way of the piston bore as shown in FIG. 3.
  • chamber 12 is narrowed, but not as far as shown in FIG. 5.
  • the associated stroke 53 of piston 17 is the same size as or smaller than stroke 50. This becomes via the subsequent stroke 51 of unit 16, 42 Medium from the chamber 11 is pressed into the chamber 12 via the line connection which is now open. This can be increased by the piston 17 executing the stroke 54 simultaneously with the stroke 51 until the piston 16 abuts the piston 17 according to FIG. 4 and the chamber 11 is completely emptied.
  • the mandrel 45, 46 can then completely fill the piston bore or extend over its entire length or only a part thereof.
  • the link 21 can exit the piston bore again so that it has not yet come into engagement with the link 47.
  • the unit 16, 42, 45 takes the piston 17 in a form-fitting manner via the stroke 55 of the same size.
  • the chamber 12 is thus reduced again, the pressure in it is increased and the valve 25 according to FIG. 4 is opened until the piston 17 strikes the insert 18 according to FIG. 5.
  • the medium thus flows from the chamber 12 into the chamber 13 through a Ring opening. It is limited by the inner circumference of the jacket 15 and by the outer circumference of the insert 18. From the chamber 13, the medium flows valve-free to the outlet 8.
  • the member 21 penetrates into the member 47 and the piston lip 22 either remains sealing in the region of the
  • the lock 30 is released at the beginning of the stroke 49.
  • the lock 31 becomes effective by a stop, since the so-called priming of the dispenser 1 now ends, namely the tightly closed chamber 12 is completely filled with medium and, if appropriate, vented. Only after the priming stroke 49 to 51, 53, 54 does the discharge stroke 52, 55 or the discharge of the medium begin from the outlet 8.
  • a force must be exerted on the handles 6, 7 that the lock 31 disengages, namely breaking the predetermined breaking points 40 and thereby the stops 39, 41 disengage.
  • the lock 30 or 31 could also, as can be seen from FIG.
  • each of the chambers 11, 12 can be filled with a liquid, a powder and / or a gas. It is also conceivable to press the medium from the chamber 12 against the direction 56 into the chamber 11 by reversing the arrangement of the piston 17 or the like, after which only the one thus formed
  • the chamber 11 is filled with liquid.
  • On half or a quarter of the smaller part of the initial volume of the chamber 12 is filled with powder and the rest with air.
  • the liquid flowing out of the chamber 11 mixes in the chamber 12 by swirling with the powder. It is partially or completely dissolved in the liquid as well as supported by the eddy currents in the chamber 12. Only then is the valve 25 opened and the medium is further mixed by the eddy currents in the chamber 13. Then the medium leaves the outlet 8 in a homogenized state.
  • the chamber 11 is delimited on its outer circumference over its entire length by the piston 17 or by a component that can be moved, namely the piston jacket 14.
  • the piston 16 is permanently sealed and slidably guided on its inner circumference.
  • Lip 22 is upstream of chamber 11 and lip 23 is downstream thereof.
  • This forms a cartridge-like unit 16, 17 with a tightly closed chamber 11, which can be inserted into the otherwise pre-assembled unit 3 before the body 4 is inserted.
  • the body 5 here extends only over a fraction of the length of the body 9.
  • the body 5 lies at its downstream end.
  • the plug 19 protrudes opposite the flow direction via the handle 7 and forms the upstream end of the body 5.
  • the body 9 lies between the handle 7 or the body 5 and the body 4 in the region of the chamber 12 on the circumference freely.
  • a viewing window is thus formed, through which the interior of the chamber 12 is visible from the outside during the entire actuation stroke or a part thereof. This enables the transfer into the chamber 12 and its emptying to be checked.
  • Corresponding viewing windows can also be provided for the chambers 11, 13.
  • the jacket 43 is provided with longitudinal slots here. They extend to its free end. Thus, the jacket 43 can be guided with a radial clamping force directly on the outer circumference of the body 9 and can remain permanently in contact with the body 5.
  • the discharge nozzle 29 is formed according to FIG. 7 by a tube axially penetrated by the outlet channel 27.
  • the body 5 can also have a jacket which projects freely in the opposite direction 56. It lies close to the outer circumference of the body 9 and thereby protects the body 9 against damage. According to FIG. 1, the body 9 lies completely within the body 5 for this purpose, the body 9 being set back relative to its upstream end.
  • the body 5 according to FIG. 8 is essentially the same as that according to FIG. 7.
  • the discharge nozzle 29 is here a flexible tube or an elastic hose. It is inserted as a separate component with one end in the body 5 and forms the outlet 8 at the other end.
  • the medium can be atomized instead of as a drop or bundled jet are discharged from outlet 8.
  • 9 shows the shape of the handle 7 or body 5, which is elongated transversely to the axis 10.
  • a rod-shaped or mandrel-shaped member 58 connects to the piston 17 in order to reduce the effective piston area or the like. It delimits the chamber 17 over its entire length in a permanently ring-shaped manner in the core, passes through the pistons 16, 17 and the body 4 or the plunger 42 in an axially displaceable manner and is guided in a sealed manner in the pistons 16, 17.
  • the mandrel 58 could also form the end of the opening member 21 which then projects freely in the direction of flow at the stroke 49 the shutter 20 opens.
  • the link 21 could then form the counter link 47.
  • the mandrel 58 could also be axially fixed or in one piece with one of the pistons 16 to 18 or form a valve member of a slide valve provided as a closure 20, the valve seat of which is provided on the piston 17.
  • the opening member 21 can be formed by a hollow needle made of metal, such as stainless steel, which forms the only transfer channel when the medium passes from the chamber 11 to the chamber 12. If the transfer takes place in the opposite direction 56 from the chamber 12 into the chamber 11, this opening member could be provided on the body 5 or plug 19 and, after the transfer has ended, pierce closures 20 in both displaceable pistons 18, 17 until it reaches the chamber directly 11 is connected. During the stroke against direction 56, the piston 18 would
  • the body 9 is expediently displaceable with the body 4 relative to the body 5 and the pistons 18, 17 are carried along by a stop on the body 5 via the transfer stroke or the discharge stroke.
  • a bottom wall that is fixed relative to the jacket 14 can then be provided as a chamber boundary, which is formed in one piece with the jacket 14.
  • each closure 20, 25 is designed as a slide valve. Its two valve bodies are formed on the one hand by the bodies 9, 17 and on the other hand by the bodies 9, 18, 32.
  • the valve 20 has depressions and / or projections 67 on the inner circumference between the sections 14, 15. They are evenly distributed around the axis 10 and lie obliquely with respect to this in the same directions. Their height or depth is less than one or half Millimeter. They delimit connecting channels between the chambers 11, 12, the same length of which is greater than the sealingly effective length of the valve slide 17. In the initial position, the plunger 42 is already in contact with the piston 16. At stroke 49, the two pistons 16, 17 are therefore synchronized by one
  • valve channels 67 form nozzles, which inject the fluid swirled about the axis 10 into the chamber 12 in such a way that the powder lying on the upper end face 24 of the piston 17 is mixed in with the fluid.
  • the piston 17 When decanting, the piston 17 remains stationary, like the piston 18 which can be displaced in the opposite direction, so that the pressure in the chamber 12 is increased.
  • the piston 18 is secured in a stationary manner with respect to the body 9 by a correspondingly high friction or a resilient latch.
  • the piston 16 takes the piston 17 with it in direction 56.
  • the chamber 12 is reduced and the pressure in it is increased until the holding force of the piston 18 is overcome.
  • the piston 18 is thereby freed from its positional security and jumps suddenly along its length, enlarging the chamber 12 in the direction 56 into its end position, which is shown with a double-dash line.
  • the closure 20 While the closure 20 is open, the upstream end of the tube 9 is sealed by the piston 16.
  • the piston 16 clears the channels 67 via the stroke 51 or 55, ie the Closure 20 opens, the chamber 12 is closed again by the piston 17.
  • the downstream end of the tube 9 is closed with a sealing member 19.
  • the link 19 lies with an annular shoulder at the end of the tube 9 and with an inner jacket 71 on the outer circumference of the tube 9.
  • the jacket 71 is formed in one piece with the jacket 32 and projects freely against the direction 56.
  • the piston 18 extends to this pipe end.
  • the jacket 32 forms an equally wide continuation of the inner circumference of the tube 9. This continuation is as long as or longer than the piston 18. It strikes in the end position on the inside of the end wall 69, which forms the nozzle channel of the opening 8 is limited in one piece and is formed in one piece with the jacket 32.
  • the swirl channels 28 are provided in the end face or stop face of the piston 18, since the piston 18 then forms the core 26.
  • the continuation mentioned has the outlet channels 27 as grooves. As soon as the upstream lip 25 of the piston 18 has left the tube 9 and has reached the channels 27, or before the piston 18 has reached the end position, the outlet valve is open.
  • the barrier 60 becomes effective, possibly simultaneously with the barrier 31, and positively prevents the axial stroke movement of the unit 2.
  • the sleeve 43 has one at the downstream end radially over its outer circumference projecting stop or cam 62. It strikes a counter-stop 63 in the interior of the jacket 32 in a form-fitting manner.
  • the stop 63 is formed by a rib 65 of the inner circumference of the casing 32 and rotatable with it about the axis 10 over at least 45 °, 90 ° or 160 ° with respect to the stop 62 and the body 5.
  • the stop 62 could also be rotatable in this way relative to the parts 5, 9, 29.
  • the coat 32 is rotatable about the axis 10 with a bearing 59.
  • the bearing 59 comprises a sleeve 61 which projects freely from the wall 33 in the direction 56, on the outer circumference of which the jacket 32 and on the inner circumference of which the cam 62 slides.
  • the sleeve 61 forms a continuation of the sleeve 36 with the same inside and outside diameter. Its downstream end is extended in the direction 56 beyond the stop 63 and has an opening or a slot 64 for receiving it.
  • the upstream end of the jacket 62 is rotatably mounted immediately adjacent to the sleeve 61 in slot segments of the wall 33 and is secured against axial pulling off against the inside thereof by a snap member 35. After said turning step, the member 65 abuts a side flank of the opening 64, so that a stop 66 lies in the axial movement path of the stop 62, which is opposite the
  • Stop 63 offset in the direction 56 by the strokes 51, 55 and is also formed by a rib of the inner circumference of the jacket 32.
  • the stop 62 is free from the stop 63, so that the contents of the chamber 12 are compressed via the stroke 51, the piston 18 is transferred into its end position at the end of this stroke 51 and the chamber 12 is then completely moved in one go via the stroke 55 can be emptied.
  • the piston 18 is moved up to the stop against the wall 69 faster than the liquid flows through the channels 27 to the wall 69 or the nozzle channel.
  • the channels 27 act as throttles, the passage cross sections of which resemble capillary channels. This ensures the finest atomization at the beginning of the discharge from the outlet 8 by the swirl device 28.
  • the stops 62, 63 meet, the stops 39, 41 also meet.
  • the inner jacket 71 is narrower than the inner circumference of the tube 9 so that it can protrude into it.
  • the adjoining ends of the tube 9 and the jacket 71 are closed with a piston-like, stationary plug 19, which also forms the nozzle core 26 in one piece and is inserted stationarily in the direction 5 in the body 5.
  • This plug 19 is permanently connected to the chamber 13 with a channel 72, 73, namely with an axial channel 72, the downstream end of which merges into a transverse channel 73.
  • Both closures 20, 25 are formed here by separate slide valves, which are assigned separate overflow channels 67, 68 on the inner circumference of the tube 9.
  • the closure 25 Before or when the piston 18 strikes the closure 19, the closure 25 is open and the medium can flow from the control openings 68 into the channel 72 via transverse channels, provided the valve 70 is open.
  • This training is suitable for particularly high discharge pressures.
  • Channel 72 is discharged through the open closure 25 with the chamber 12 closed, the compressed content of the chamber 13 through the channel 72. If this content is air, the patient's mucous membranes to be treated immediately with the mixed medium.
  • the walls 33, 34 form an oval cap in axial view.
  • the body 5 has no components protruding in the opposite direction 56 over the jacket 34.
  • the jacket 34 surrounds the locking member 39 in the starting position and has on its longitudinal sides opposite cutouts 74 which extend to the free end of the jacket 34 and are at a distance from the wall 33 which is as large as or larger than that
  • Length of the jacket is 36.
  • the handle 6 is already inside the casing 34 after the stroke 49 and, according to FIG. 12, the handle 6 only reaches the inside of the casing 34 during the transfer stroke, during the compression stroke for the chamber 12 or during the compression stroke for the Chamber 13.
  • the downstream end of the tube 9 has a radially projecting, annular collar on the outer circumference, which rests centering on the inner circumference of the jacket 32 and abuts axially on ribs which connect the jackets 32, 71.
  • the swirl device 28 is formed here by depressions on the inside of the end wall 69.
  • a powder is provided as the medium, this is expediently first produced by freeze-drying as a granular, free-flowing substance which is subsequently broken down mechanically into finer particles if necessary. In any case, there is a very large surface area, which ensures rapid dissolution in liquid.
  • the maximum amount of powder can be 5, 2 or 1 mg.
  • the empty and filling volume of the chamber 11 is expediently at least 50 or 100 and at most 300 or 200 ⁇ l, in particular between 120 and 150 ⁇ l. In contrast, the empty volume of the chamber 12 is at least three or four times larger.
  • the pistons 16 to 18 are the same and are designed as solid bodies, each of which has a plurality of, for example three, tight projections or beads spaced apart in the axial direction. These protrude in a ring around the axis 10 over the piston body and lie linearly against the inner circumference of the tube 9.
  • Each piston 16 to 18 is symmetrical with respect to the middle of its length and can therefore be inserted in two turning positions rotated by 180 ° with the same effect through both ends into the tube 9, which considerably facilitates the automatic or mechanical assembly.
  • the bodies 4, 5 can also be formed in one piece with one another. They are then connected to one another at the lock 30 via a predetermined breaking point, for example when the body 4 takes the piston 16 with it through longitudinal slots in the body 9, the bottom 44 is penetrated by an insertion opening for the preassembled unit 9, 16, 17, 18 and the handle 6 is laterally outside of this insertion opening. Otherwise, the features of each embodiment can be provided additively or in combination in all the other embodiments, which is why the corresponding description parts apply to all embodiments.
  • the bellows 14 according to FIG. 1 can be designed according to one of these publications.
  • the chamber 12 can also be limited by such a bellows corresponding to the chamber 11.
  • the body 9 or each of the jackets 14, 15 can be formed in one piece with the plug 19 or with the body 5 or in the case of the reverse transfer direction described, in one piece with the body 4.
  • the length of the dispenser 1 between the opposite ends of the bodies 4, 5 can be less than 15 cm

Landscapes

  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
  • Nozzles (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)
  • Medical Preparation Storing Or Oral Administration Devices (AREA)

Abstract

Deux chambres (11, 12) sont séparées l'une de l'autre par un piston intermédiaire (17) qui est déplacé par commande et pour l'ouverture d'un organe d'obturation (20), d'abord dans la direction de l'écoulement (56), puis, cas échéant, pour le transvasement d'une chambre (11) dans l'autre chambre (12), à l'encontre de cette direction (56), ainsi qu'après transvasement et dégagement d'un organe d'arrêt (70), de nouveau dans cette direction (56), de sorte que le milieu transvasé et mélangé à un autre milieu est évacué de la chambre (12) via une soupape d'échappement (25). On obtient ainsi un transvasement simple ou un mélange simple des milieux avant décharge, avec décharge ultérieure des milieux mélangés,
EP98965137A 1997-11-08 1998-10-22 Distributeur pour plusieurs milieux melanges avant decharge Expired - Lifetime EP1027166B1 (fr)

Applications Claiming Priority (7)

Application Number Priority Date Filing Date Title
DE19749514 1997-11-08
DE19749514A DE19749514A1 (de) 1997-11-08 1997-11-08 Verfahren zum Ausbringen von wenigstens zwei verschiedenen Medien und Spender dafür
DE19749513 1997-11-08
DE19749513 1997-11-08
DE19837127A DE19837127A1 (de) 1997-11-08 1998-08-17 Spender für Medien
DE19837127 1998-08-17
PCT/EP1998/006711 WO1999024170A1 (fr) 1997-11-08 1998-10-22 Distributeur pour plusieurs milieux melanges avant decharge

Publications (2)

Publication Number Publication Date
EP1027166A1 true EP1027166A1 (fr) 2000-08-16
EP1027166B1 EP1027166B1 (fr) 2002-07-10

Family

ID=27217911

Family Applications (3)

Application Number Title Priority Date Filing Date
EP02027186A Expired - Lifetime EP1297898B1 (fr) 1997-11-08 1998-10-22 Distributeur avec aiguille perforante pour matériaux à mélanger pendant la distribution
EP98952735A Expired - Lifetime EP1027165B1 (fr) 1997-11-08 1998-10-22 Procede permettant de distribuer au moins deux produits differents et distributeur a cet effet
EP98965137A Expired - Lifetime EP1027166B1 (fr) 1997-11-08 1998-10-22 Distributeur pour plusieurs milieux melanges avant decharge

Family Applications Before (2)

Application Number Title Priority Date Filing Date
EP02027186A Expired - Lifetime EP1297898B1 (fr) 1997-11-08 1998-10-22 Distributeur avec aiguille perforante pour matériaux à mélanger pendant la distribution
EP98952735A Expired - Lifetime EP1027165B1 (fr) 1997-11-08 1998-10-22 Procede permettant de distribuer au moins deux produits differents et distributeur a cet effet

Country Status (9)

Country Link
US (1) US6626379B1 (fr)
EP (3) EP1297898B1 (fr)
JP (2) JP4411374B2 (fr)
AU (2) AU2047599A (fr)
CA (1) CA2307160C (fr)
DE (5) DE19749514A1 (fr)
DK (2) DK1027165T3 (fr)
ES (2) ES2222430T3 (fr)
WO (2) WO1999024170A1 (fr)

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Also Published As

Publication number Publication date
EP1297898B1 (fr) 2004-05-26
EP1027165B1 (fr) 2003-03-19
EP1297898A3 (fr) 2003-04-09
DE59811482D1 (de) 2004-07-01
DK1297898T3 (da) 2004-10-04
CA2307160C (fr) 2009-05-05
DK1027165T3 (da) 2003-07-21
EP1027165A2 (fr) 2000-08-16
JP2001522717A (ja) 2001-11-20
DE59804744D1 (de) 2002-08-14
AU1031699A (en) 1999-05-31
DE19749514A1 (de) 1999-05-12
JP4411374B2 (ja) 2010-02-10
WO1999024171A3 (fr) 1999-07-15
DE59807579D1 (de) 2003-04-24
JP2006081917A (ja) 2006-03-30
CA2307160A1 (fr) 1999-05-20
ES2222430T3 (es) 2005-02-01
US6626379B1 (en) 2003-09-30
AU2047599A (en) 1999-05-31
EP1297898A2 (fr) 2003-04-02
WO1999024170A1 (fr) 1999-05-20
EP1027166B1 (fr) 2002-07-10
JP4789089B2 (ja) 2011-10-05
WO1999024171A2 (fr) 1999-05-20
ES2194360T3 (es) 2003-11-16
DE19837127A1 (de) 1999-05-12

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